Advertisements
Advertisements
प्रश्न
A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is,
पर्याय
`"u"/"g"`
`"u"^2/(2"g")`
`"u"^2/"g"`
`"u"/(2"g")`
Advertisements
उत्तर
`"u"^2/(2"g")`
At highest point, v = 0
Using v2– u2 = 2as, we get
0 − u2 = 2(−g)h ( ∵ a = −g and s = h)
or h = `"u"^2/(2"g")`
APPEARS IN
संबंधित प्रश्न
Which of the two can be zero under certain conditions : average speed of a moving body or average velocity of a moving body ?
Name the physical quantity whose SI unit is :
(a) m/s (b) m/s2
Fill in the following blank with suitable word :
Velocity is the rate of change of……………………… It is measured in.............. .
Explain the meaning of the following equation of motion :v = u + at, where symbols have their usual meanings.
Derive the formula s= `ut+1/2at^2` , where the symbols have usual meanings.
Differentiate between uniform acceleration and variable acceleration.
The figure shows the displacement - time graph for four bodies A, B C and D. In each case state what information do you get about the acceleration (zero, positive or negative).

Can you suggest a real-life example about the motion of a body from the following velocity – time graph?

The velocity-time graph (Fig. 8.5) shows the motion of a cyclist. Find (i) its acceleration (ii) its velocity and (iii) the distance covered by the cyclist in 15 seconds.

When will you say a body is at uniform acceleration?
